private void AddRadioEffectIntercom(ClientAudio clientAudio)
{
var mixedAudio = clientAudio.PcmAudioShort;
for (var i = 0; i < mixedAudio.Length; i++)
{
var audio = mixedAudio[i] / 32768f;
audio = _highPassFilter.Transform(audio);
if (float.IsNaN(audio))
{
audio = _lowPassFilter.Transform(mixedAudio[i]);
}
else
{
audio = _lowPassFilter.Transform(audio);
}
if (!float.IsNaN(audio))
{
// clip
if (audio > 1.0f)
{
audio = 1.0f;
}
if (audio < -1.0f)
{
audio = -1.0f;
}
mixedAudio[i] = (short)(audio * 32767);
}
}
}
private void AddEncryptionFailureEffect(ClientAudio clientAudio)
{
var mixedAudio = clientAudio.PcmAudioShort;
for (var i = 0; i < mixedAudio.Length; i++)
{
mixedAudio[i] = RandomShort();
}
}
private void AdjustVolume(ClientAudio clientAudio)
{
var audio = clientAudio.PcmAudioShort;
for (var i = 0; i < audio.Length; i++)
{
var speaker1Short = (short)(audio[i] * clientAudio.Volume);
audio[i] = speaker1Short;
}
}
public void AddClientAudioSamples(ClientAudio audio)
{
//sort out volume
// var timer = new Stopwatch();
// timer.Start();
bool newTransmission = LikelyNewTransmission();
int decodedLength = 0;
var decoded = _decoder.Decode(audio.EncodedAudio,
audio.EncodedAudio.Length, out decodedLength, newTransmission);
if (decodedLength <= 0)
{
Logger.Info("Failed to decode audio from Packet for client");
return;
}
// for some reason if this is removed then it lags?!
//guess it makes a giant buffer and only uses a little?
//Answer: makes a buffer of 4000 bytes - so throw away most of it
var tmp = new byte[decodedLength];
Buffer.BlockCopy(decoded, 0, tmp, 0, decodedLength);
audio.PcmAudioShort = ConversionHelpers.ByteArrayToShortArray(tmp);
//adjust for LOS + Distance + Volume
AdjustVolume(audio);
if (globalSettings.GetClientSettingBool(ProfileSettingsKeys.RadioEffects))
{
if (audio.ReceivedRadio == 0)
{
AddRadioEffectIntercom(audio);
}
else
{
AddRadioEffect(audio);
}
}
if (newTransmission)
{
// System.Diagnostics.Debug.WriteLine(audio.ClientGuid+"ADDED");
//append ms of silence - this functions as our jitter buffer??
var silencePad = (AudioManager.INPUT_SAMPLE_RATE / 1000) * SILENCE_PAD;
var newAudio = new short[audio.PcmAudioShort.Length + silencePad];
Buffer.BlockCopy(audio.PcmAudioShort, 0, newAudio, silencePad, audio.PcmAudioShort.Length);
audio.PcmAudioShort = newAudio;
}
_lastReceivedOn = audio.ReceivedRadio;
LastUpdate = DateTime.Now.Ticks;
JitterBufferProviderInterface.AddSamples(new JitterBufferAudio
{
Audio =
SeperateAudio(ConversionHelpers.ShortArrayToByteArray(audio.PcmAudioShort),
audio.ReceivedRadio),
PacketNumber = audio.PacketNumber
});
//timer.Stop();
}
private void AddRadioEffect(ClientAudio clientAudio)
{
var mixedAudio = clientAudio.PcmAudioShort;
for (var i = 0; i < mixedAudio.Length; i++)
{
var audio = (double)mixedAudio[i] / 32768f;
if (globalSettings.GetClientSettingBool(ProfileSettingsKeys.RadioEffectsClipping))
{
if (audio > RadioFilter.CLIPPING_MAX)
{
audio = RadioFilter.CLIPPING_MAX;
}
else if (audio < RadioFilter.CLIPPING_MIN)
{
audio = RadioFilter.CLIPPING_MIN;
}
}
//high and low pass filter
for (int j = 0; j < _filters.Length; j++)
{
var filter = _filters[j];
audio = filter.ProcessSample(audio);
if (double.IsNaN(audio))
{
audio = (double)mixedAudio[j] / 32768f;
}
else
{
// clip
if (audio > 1.0f)
{
audio = 1.0f;
}
if (audio < -1.0f)
{
audio = -1.0f;
}
}
}
var shortAudio = (short)(audio * 32767);
if (clientAudio.Modulation == FM &&
natoTone != null && globalSettings.GetClientSettingBool(ProfileSettingsKeys.NATOTone))
{
shortAudio += natoTone[natoPosition];
natoPosition++;
if (natoPosition == natoTone.Length)
{
natoPosition = 0;
}
}
mixedAudio[i] = shortAudio;
}
}
